storyin earth defense force: insect armageddon thousands of giant insects and aliens once again ravage the earth, and only the earth defense force can stop them. defend the city of new detroit against an infestation bigger and meaner than ever before. destroy these monsters at all costs, even if it means turning entire city blocks into rubble.gameplaylike the first game in its series, earth defense force: insect armageddon is a third-person shooter featuring raw arcade satisfaction on a gigantic modern scale as players take on wave after wave of alien insect and robotic enemies. the game also features fully destructible environments in the fictional city of new detroit. gameplay improvements over the earlier game include: improved graphics, more weapons (now over 300), an new weapons unlock system, four upgradeable armor types, local split-screen play as well as online action, and special online modes.